Many people don’t realize that bathroom exhaust fans are an important part of your home’s ventilation system. They are often used to eliminate foul odors and to clear condensation off mirrors, but their most important function is to remove moisture. Excess moisture can cause structural damage and rotting of walls and ceilings. But it also encourages the growth of molds, mildew, bacteria, dust mites and insects, which can be detrimental to your family’s health. An efficient exhaust fan can control these allergens and even lower air-conditioning costs by dehumidifying your house.
Your current fan may be ineffective
If you live in an older home, there is a good chance that your bathroom exhaust fan is too noisy, moves very little air, is not energy-efficient, uses high-wattage lighting and may cause back drafting of combustion appliances – and therefore should be replaced. Newer fans are quiet, energy-efficient and more effective at moving air and removing moisture.
A simple test
Here’s a simple test to see if your exhaust fan is drawing air. Hold a piece of toilet tissue up to the grill of the fan. A properly working fan will hold the tissue tightly to the grill. And to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds